More info to my question: dig and Nagios have been suggested as possible solutions.
dig (and I suspect Nagios, which someone else mentioned) can only test resolution times from one point in the network, or maybe several, and using a very small number of tests. Our current system watches ALL queries and responses to and from the nameservers and summarises ALL the response times, regardless of where the queries came from. For every second of the day we can say what the average, minimum, maximum, etc response times were. We're looking for something that can do that, or something similar... Regards, K. -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Karl Auer (ka...@biplane.com.au) +61-2-64957160 (h) http://www.biplane.com.au/kauer/ +61-428-957160 (mob) GPG fingerprint: DA41 51B1 1481 16E1 F7E2 B2E9 3007 14ED 5736 F687 Old fingerprint: B386 7819 B227 2961 8301 C5A9 2EBC 754B CD97 0156
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